Spindle-bearing for centrifugal separators.



No.. 864,470. PATENTBD AUG. 27, 1907,4

W. JRGENSEN.

SPINDLE BEARING FOR GENTRIFUGAL SEPARATORS.

APPLIoATloN FILED .TUNE 2s. 190e.

s S s THS Nuns Ps-rrns cu.. wasmaro @wb-gwn UNITED STATES PATENT OFFICE.

WALTER JRGENSEN, OF STOCKHOLM, SWEDEN, ASSIGNOR TO AKTIEBOLAGET SEPARATOR, OF STOCKHOLM, SWEDEN, A COMPANY.

SPINDLE-BEARING FOR CENTRIFUGAL SEPARATORS.

Specification of Letters Patent.

Patented Aug'. 27, 1907.

Application filed June 28,1906. Serial No. 323,770.

To all whom it may concern:

Be it known that I, WALTER JnGENsnN, a subject of the Emperor of Russia, residing at 8 Fleminggatan, Stockholm, Sweden, have invented certain new and useful Improvements in Spindle-Bearings or Centrifugal Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable o thers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

My invention relates to supports for the spindle of centrifugal separators in which the bowl shaft is fixed to the bowl and coupled to the lower driving spindle, said driving spindle turning with its lower end on a pair oi tread-wheels rolling in a bearing secured at the upper end of the bottom screw. In such devices it is of utmost importance that the touching parts oi the driving spindle and the Atread wheels exactly maintain their geometrical form, because, if not, the run of the machine becomes noisy, owing to the iact that the vibrations `occurring in the irame then become quite considerable. The irregularity of the touching sur- 'faces essentially arise in consequence of the wearing of the touching parts but also on account of an improperi'ttin g in of the centrifugal bowl and its shaft upon the lower driving spindle.

My invention relates to an improvement, by which the said inconvenience may be avoided. I attain this result by inserting a spring connection between the driving spindle and the part turning on the treadwheels.

My invention' is illustrated on the annexed drawing, in which a is the lower part oi the driving spindle to which the bowl-shaft is connected by means of a coupling device, not shown on the drawing. The driving spindle is provided with a central socket, in which the steelpoint b is fitted.l This socket is somewhat enlarged downwards, and in the space between the wall of said socket and the steel-point a4 spiral spring c is fitted pressing with its upper end against the bottom oi the socket and with its lower end against the head d of the steel-point. This head is adapted to turn on a pair of tread-wheels c, e rolling with their shafts in bearings secured to the bottom-screw g. In the vertical wall of the socketed portion oi the spindle ais the orifice h.

In this orifice is the pin 'i which is secured to the peint b. This orifice h does not extend entirely around the spindle, therefore the spindle and point revolve together. The slot, however, is of greater width than the width oi the pin and hence the point and spindle can have a relative movement.

I do not intend to limit myself to the particular type of spring shown.

If the under surface of the head of the steel-point is not perfectly even or ii the tread-wheels occupy an eccentric position or are of irregular form, vibrations arise in the driving spindle and the frame. As by means of the above described spring device the steelpoint has the opportunity to vibrate in a vertical direction, the former vibrations are equalized and the run of the machine becomes equal and silent.

What I claim is:

l. In combination, a driving spindle for a centrifugal separator, having a socket, a steel point locatedrin said socket, said steel point'having a head, tread wheels upon which said head rests, and a spring in said socket bearing` against the wall of-said socket and the head of said point, whereby said point has a yielding vertical movement.

2. In combination, a drivingI spindle for a centrifugal separator, having a socket, a steel point located in said socket, said steel point having a head, tread wheels upon Vwhich said head rests, a spring in said socket bearingl against the wall of said socket and the head oi said point, whereby said point has a yielding,` vertical movement, and a connection between said point and spindle whereby the point revolves with the spindle.

In combination, a driving spindle for a centrifugal separator', having,l a socket, a steel point located in said socket, said steel point having a head, tread wheels upon which said head rests, a spring in said socket bearingl against the wall of said socket and the head of said point, whereby said point has a yielding vertical movement, and a connection between said point and spindle whereby the point revolves with spindle, but the spindle and point can have a relative vertical movement.

4. In combination a driving spindle for a centrifugal machine, said spindle having a socket, a steel-point restingr loosely in said socket, said steel-point havingl a head, a spring in said socket bearing against the walls of said socket and the head of said point, and tread-wheels upon which said head rests.

In testimony that I claim the 'foregoing as my invention, and have signed my name in presence of two subscribing witnesses. i

WALTER JRGENSEN.

Witnesses:

E. RBERG, J. L. KJnLLBnnG. 

